<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<link rel="stylesheet" type="text/css" href="css/my.css"/>
		<style type="text/css">
			h1{
				text-decoration: underline;
			}
			/*内部样式*/
			.blue{
				color: blue;
			}
		</style>
	</head>
	<body>
		<!--内嵌样式-->
		<h1 style="color: red;">王老师</h1>
		<h1 class="blue">朱老师</h1>
		<h1 class="yellow">鞠老师</h1>
	</body>
</html>
